Update Linux to v5.4.148
Sourced from [1]
[1] https://cdn.kernel.org/pub/linux/kernel/v5.x/linux-5.4.148.tar.gz
Change-Id: Ib3d26c5ba9b022e2e03533005c4fed4d7c30b61b
Signed-off-by: Olivier Deprez <olivier.deprez@arm.com>
diff --git a/include/linux/dma-direct.h b/include/linux/dma-direct.h
index adf993a..6a18a97 100644
--- a/include/linux/dma-direct.h
+++ b/include/linux/dma-direct.h
@@ -3,8 +3,11 @@
#define _LINUX_DMA_DIRECT_H 1
#include <linux/dma-mapping.h>
+#include <linux/memblock.h> /* for min_low_pfn */
#include <linux/mem_encrypt.h>
+static inline dma_addr_t phys_to_dma(struct device *dev, phys_addr_t paddr);
+
#ifdef CONFIG_ARCH_HAS_PHYS_TO_DMA
#include <asm/dma-direct.h>
#else
@@ -24,11 +27,16 @@
static inline bool dma_capable(struct device *dev, dma_addr_t addr, size_t size)
{
+ dma_addr_t end = addr + size - 1;
+
if (!dev->dma_mask)
return false;
- return addr + size - 1 <=
- min_not_zero(*dev->dma_mask, dev->bus_dma_mask);
+ if (!IS_ENABLED(CONFIG_ARCH_DMA_ADDR_T_64BIT) &&
+ min(addr, end) < phys_to_dma(dev, PFN_PHYS(min_low_pfn)))
+ return false;
+
+ return end <= min_not_zero(*dev->dma_mask, dev->bus_dma_mask);
}
#endif /* !CONFIG_ARCH_HAS_PHYS_TO_DMA */